Load Swap Relay
The Load Swap Relay is used on models with A/C and power steering. The relay works in conjunction with the power steering pressure switch to disengage the A/C compressor clutch.
If the compressor clutch is engaged when the power steering pressure switch contacts close, the input signal from the switch to the ECU also activates the load swap relay. The relay contacts open, cutting off electrical feed to the compressor clutch. The clutch remains disengaged until the pressure switch contacts reopen and engine idle returns to normal.
NOTE:
The load swap relay does not reengage the compressor clutch immediately. The relay has a timer that delays energizing the clutch for .5 second to ensure smooth engagement.